COLUMBIA DIGITAL MEDIA, INC.
Patent Owner
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Aug 22, 2006 most recent publication
Details
- 4 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 131 Total Citation Count
- Apr 29, 1996 Earliest Filing
- 5 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Top Patents (by citation)
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Recent Publications
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Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
7094290 Light guiding plate manufacturing apparatus and light guiding plate manufacturing methodExpiredApr 08, 04Aug 22, 06[B05C]
6818157 Light guiding plate manufacturing apparatus and light guiding plate manufacturing methodExpiredMar 04, 02Nov 16, 04[B05D, B29D, G02B, G03B]
5805563 Optical information recording medium on which a visible display having a stereoscopically view effect and a depth viewing effect can be madeExpiredApr 22, 97Sep 08, 98[G11B]
5703868 Optical information recording medium having discernible obverse and reverse sidesExpiredOct 09, 96Dec 30, 97[G11B]
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